Mechanical motion.



No. 660,860. Patented Oct. V30, |900.

4 F. LAMBERT.

MECHANICAL MOTION. (Appucmm med Dec. 1, 1s'9.)

@No Model.) 4 3 Sheets-Sheet l.

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No. 660,660. F. LAMBERT.

MECHANICAL MOTION.

(Applicmzium filed Dec. 1, 1899.) (No Model.)

Pafented oct. 30, |000.

No. 660,860. Patented 0st. 30, |900; lF. LAMBERT.

MECHANICAL MOTION.

{Application led Dec. 1, 1899.)

(No Model.)

' 3 Sheets-Sheet 3.

UNTTED STATES PATENT OEETCE.

FRANK LAMBERT, OE NEw YORK, N. Y., AssIGNOR OE ONE-HALE To GEORGE T.MONTGOMERY, OE sAMEPLAOE.

IVIECHANICAI` MOTION.

SPECIFICATION forming part of Letters Patent N 0. 660,860, dated October30, 1900.

Application filed December 1, 1899. Serial No. 738,779. (No model.) Y

To ally/hom, it may concern:

Be it known that I, FRANK LAMBERT, a citizen of the United States, and aresident of New York, (Brooklyn,) Kings county, State of New York, haveinvented an Improved Mechanical Motion, of which the following is aspecification.

My invention relates to a new mechanical mot-ion especially applicableto machines for automatically feeding blanks or the like to a tool foroperating thereon in a direction perpendicular to the tool and to thesurface to be acted upon. For instance, if the tool is a rotary saw orwheel the blanks are fed toward and from said wheel in a direction inline with the radius thereof.

My invention comprises a rotary eccentric having a disk or the likemounted thereon in such a manner that it will normally rotate therewithand means for intermittently arresting the rotary motion of the disk,whereby the eccentric may act on the disk to displace the same, andpreferably the rotary motion is a differential one, so that when the newmotion is used in machines adapted to carry blanks to a tool the carriermay be moved very swiftly during its rotary motion to carry forward theblanks and very slowly during its reciprocatingr motion when a blank isbeing acted upon by the tool. This latter motion may be made so slowthat the carrier is practically at a standstill while the attendantsupplies it with blanks.

To illustrate my invention, l have shown in the accompanying drawings ascrew-slotting machine provided with a circular saw adapted to cut ormill slots in the heads of screws and a rotary blan k-carrier actuatedby mechanism Operating on the principle of the new mechanical motion.However, it will be evident that this new motion may be used in variousother machines.

In the drawings, Figure l is a plan View of the screw-slottingmachine'with certain portions in section. Fig. 2'is asectional endviewof the machine, taken on line 2 of Fig. 1. Fig. 3 is a diagramillustrating the principal of the mechanical movement. Figs. 4., 5, and6 are views showing a part of the mechanism 5o of the machine in threedifferent positions.

Fig. 7 is a sectional view of the shaft on which the carrier is mounted.FigfS is a detail view hereinafter referred to.

ing-shaft A is driven in any suitable manner-as, 'for instance, by meansof a pulleya and belt. The milling-tool or circular saw B is carried bythe shaft A and the rotary blankcarrier C by the shaft D, mounted inbracket E and driven through the medium of the crank-arm F, the rollerfof which engages in cam-groove h in the gear-wheel H, which latter ismounted in bearings in the frame K and driven by a pinion A on the maindriving-shaft.

Diagram Fig. 3 illustrates the principle of the new mechanical motionadapted to alternately impart to the carrier Ca rotary motion to bring ablank in front of the saw and then a reciprocating motion to carry theblank against the saw in a direction in line with a radius thereof.

Suppose the disk X to be mounted on the eccentric Y, so as to normallyrotate theretherewith, as "by means of friction, and the disk to beprovided with projections. In the diagram these projections are shown aslateral, and their positions with relation to the aXis of rotation areindicated by a, Qc/ 002, dto. The dotted circle Z represents the path ofa projection occupying the position sc-that is, nearest the axis ofrotation.

If a stop W be placed just outside the circle Z at any point when theeccentric Y and disk Xare rotated together in the direction of thearrow,'the projection nearest the stop inv any position besidesx willcome in contact with the stop and arrest the rotary motion of the disk.The eccentric continuing its rotation will act as a cam to reciprocatethe disk, the stop W acting asa guide and determining the direction ofthe reciprocation until the eccentric has drawn the projection into theposition sc-that is, within the circle Z-when the projection will escapethestop W. Then the disk X will rotate with the eccentric Y until thenext projection (which will be in position ad) comes' against the stopWand arrests the rotary motion of the disk. The reciprocation is thenrepeated, followed by another partial rotation, and so on. With thelstop W in the position shown in full lines Referring to Figs. l, 2, and7, the main driv-V IOO each projection in turn will come in contact withthe st'op and varrest the motion of the disk X, as describedthat is, thedisk X will automatically register its stopping positions at everyprojection. As the stop Wis moved farther away from the axis of rotationthe disk X will automatically register only at every second, third,fourth, fifth, the., projections. For instance, should the stop W bemoved into the position shown in dotted lines-that is, just within thecircular path Z-projections in the positions 1r', as, and x9 will escapethe stop and the disk X will register only at every fourth projection,or if the stop W is in a position intermediate between that shown iufull lines and that shown in dotted lines the disk can be made toregister at every second or third projection, ac-

. cording to hoW near to the aXis of rotation the eccentric Y must bringa projection before it can escape the stop WV. It is evident, therefore,that by simply adjusting the stop W the disk X may be made toautomatically register its rotary stopping positions at any desiredangle of rotation.

Referring to Fig. 7, the rotary blank-carrier C (corresponding to thedisk X) is frictionally mounted on the rotating eccentricshaft D(corresponding to the eccentric Y) by a bearing between the shoulderCland the washer d', of felt or the like, the amount of friction beingregulated by the nut (l2. To prevent this nut cl2 from being turned onthe shaft D when the carrier does not rotate therewith, I interposebetween the friction-washer d and the nut (Z2 a washer d3, having aninward projection entering` a groove (Z4 in the shaft D to prevent itsturning` on the shaft. The axis of rotation of shaft D passes throughthe point E. v,

The carrier C is preferably formed with a disk portion having blocks csecured at intervals around its periphery. These blocks c are perforatedfor the insertion of bushings adapted to carry the blanks r, and thesebushings may be readilychanged to suit different sizes or kinds ot'blanks. As shown in Figs. l and 2 and at the lower part of Fig. 7, thebushings c are adapted to receive screws provided with heads, while thebushing c2, at the upper part of Fig. 7, is adapted to hold headlessscrews. For this purpose a pin c3 may be passed through the lower partof the bushing c2 in a position to allow the top of the screw to projectjust enough to be properly grooved. The blocks c may also carry theprojections c5, adapt-ed to engage with the stop L, secured to thebracket E. As shown in Fig. l, the edge of .the projection c5 thatengages the stop L is preferably in` line with the center of thebushing, and the stop L. is so adjusted that as the carrier isreciprocated the blank in the bushing opposite the projection engagingthe stop is moved iu a direction in line with a radius of the saw B.

The saw B may be mounted on the drivingshaft A, as shown in section inFig. l. The saw is first clamped to the sleeve Y), between the shoulderb' and a ring h2, by the nut b3. The sleeve b is prevented from turningon the shaft A by means of a key b4 passing through the sleeve andentering a groove a' in the shaft. The sleeve b is clamped to the shaftA by the adjusting-n ut b5 and the tightening-nut h6.4 rA blade-springS, secured to the bracket E by nut s, is bifurcated to pass overthe edgeof the saw B, as shown in Figs. 1 and 2.

The bracket F. turns on the center e, Fig. 2, and is clamped to theframe K of the machine by nuts e and @2, Figs. l and S. By looseningthese nuts the bracket may be adjusted by means of the adjusting-screwes, for the purpose hereinafter explained.

The special arrangement of the cam-groove h in wheel H and crank-arm Fof eccentricshaft D gives a differential rotary motion to the shaft D.

The receptacle M at the front of the machine holds the blanks to be fedto the carrier C.

The operation of the machine is as follows: The attendant in front ofthe machine places the blanks r in the carrier C as the empty bushings care turned uppermost, and the rotary motion of the carrier brings eachblank in turn opposite the saw B. 1vVhen a projection c5 comes incontact with the stop L, the rotary motion of the carrier is arrested,and the continued rotation of the cam-shaft Dreciprocates the carrier,the stop L and projection c5 guiding the carrier so that the blank ispresented to the saw B in line with a radius thereof. As the blankapproaches the saw its head comes against the split spring S, whichholds the blank firmly in position while it is being milled. When theshaft D has drawn the projection c5 far enough toward the axis ofrotation to escape the stop L, the Acarrier C `again rotates with theshaft D until the next projection comes in contact with the stop. As thecompleted screws r' are carried around they drop by gravity out of thebushings, as shown at Fig. 2, the sudden stopping of the carrier alsohelping to shake the screws out.

Referring to Figs. 4, 5, and 6, the relative positions of the axis ofrotation E of the shaft D, the crank-arm F, groove H, and the saw B aresuch that from the time a projection c5 comes in contact with the stopL, Fig. 4, (and a blank begins to move against the saw,) until the blankhas been carried to a position nearest the saw, Fig. 5, (when the slotis `co`mpleted,) the motion of the crankarm F is comparatively veryslow, whereas from the time the slot in one blank is completed, Fig. 5,`(while the projection c5 is beingdrawn back to a position to escape thestop L, Fig. 6, and the carrier rotated to bring another blank oppositethe saw,) until the 0 660.860 A si neXt blank begins to be moved againstthe saw, Fig. 4, the motion of the crank-arm F is comparatively veryswift.

From the foregoing it will be seen that while the necessary slow motionis imparted to the blank as it is being milled there is no lost time inwithdrawing the completed screw and presenting a fresh blank to thetool; also, that while the blank is being milled there is no rotarymotion of the carrier, and its reciprocating motion is so slow that theattendant has no difficulty in feeding the carrier with blanks.

If it is desired to mill grooves in the screws of different depths or toadj ust the dept-h of the milling to different milling-tools, the axisof rotation E may be moved nearer to or far- 'ther froml the axis of thesaw by adjusting the bracket E by means of the adjustingscrew c2, asbefore described.

The stop L may be made adjustable on the bracket E toward and from theaxis of rotation of the carrier C in any suitable manner. In the machineshown in the drawings the parts are so arranged that this adjustment maybe accomplished by simply turning the stop L on its screw Z, Fig. l,when loosened. A very slight motion only is necessary to change theregistering position of the carrier.

In the claims the word disk is meant to cover any equivalentdevice-such, for instance, as the carrier C.

I claim as my inventionl. A new mechanical motion comprising a rotatableeccentric, a disk mounted thereon and adapted to normally rotatetherewith, and means for intermittently arresting the rotary motion ofthe disk, whereby the eccentric may act on the disk to displace thesame.

2. A new mechanical motion comprising a rotatable eccentric, a disk,frictionally mounted thereon, and means for' intermittently overcomingthe friction to allow the eccentric to displace the disk.

3. A new mechanical motion comprising an eccentric having a dierentialrotary motion, a disk mounted thereon and adapted to normally rotatetherewith, and means for intermittently arresting the lrotary motion ofthe disk whereby the said eccentric may act on the disk to displace thesame.

4. A new mechanical motion comprising an eccentric havinga differentialrotary motion, a disk frictionally mounted thereon, and means forovercoming the friction during the slower part of the diiferentialmotion of the eccentric.

5. A new mechanical motion comprising an eccentric having a continuousrotary motion,

and a disk mounted on said eccentric and 6o 6. The combination of arelatively-xed point, with a rotatable eccentric, a disk mounted thereonand adapted to normally ro tate therewith, and means for stopping therotary motion of the said disk at such a point in the travel of theeccentric that the said eccentric may act upon the said disk to reciprocate it toward and from the said fixed point.

7. The combination of a relatively-fixed point, with a rotatableeccentric, a disk fric tionally mounted thereon, and means forovercoming the said friction at such a point in the travel of theeccentric that the said ec-' centric may act upon the said disk toreciprocate it toward and from the said fixed point, and means to varythe relative positions of the axis of rotation and the said fixed point.

8. A new mechanical motion comprising a rotatable eccentric, a diskfrictionally mounted thereon and provided with projections, incombination with a stop in the rotary path of the said 'projectionsadapted to arrest the rotation of the disk until the eccentric haswithdrawn the projection from the stop.

9. A new mechanical motion comprising a rotatable eccentric, a diskfrictionally mounted thereon and provided with projections, incombination with a guide-stop in the rotary path of the said projectionsadapted to arrest the rotation of the disk and guide the same while theeccentric acts upon the disk to reciprocate it.

lO. A new mechanical motion comprising a rotatable eccentric, a diskfrictionally mount- FRANK LAMBERT.

Witnesses:

EDITH C. SABLES, EDITH J. GRIswoLD.

IOO

